GRB 210822A: Enhanced Swift-XRT position
Abstract
Using 501 s of XRT Photon Counting mode data and 2 UVOT images for GRB 210822A, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 304.43756, +5.28349 which is equivalent to: RA (J2000): 20h 17m 45.01s Dec (J2000): +05d 17' 00.6" with an uncertainty of 2.0 arcsec (radius, 90% confidence). This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177). This circular was automatically generated, and is an official product of the Swift-XRT team.
- Publication:
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GRB Coordinates Network
- Pub Date:
- August 2021
- Bibcode:
- 2021GCN.30682....1E